lxxxvi 



Meteorological Observations. 



Abstract of the Hesults of the Hourly Meteorological Observations 



taken at the Surveyor General" s Office, Calcutta, 



in the month of November •, 1857. 



Monthly Eesults. 



Mean height of the Barometer for the month, 

 Max. height of the Barometer occurred at 9 A. M. on the 16th, 

 Min. height of the Barometer occurred at 3 & 4 P. M. on the 6tb, 

 Extreme range of the Barometer during the month, 

 Mean of the Daily Max. Pressures, 

 Ditto ditto Min. ditto, 

 Mean Daily range of the Barometer during the month, . . 



Inches. 

 29.963 

 30.145 

 29.791 



0.354 

 30.039 

 29.905 



0.134 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 2 P. M. on the 2nd, 

 Min. Temperature occurred at 6 A. M. on the 20th, 

 Extreme range of the Temperature during the month. 

 Mean of the Daily Max. Temperature, 



Ditto ditto Min. ditto, 

 Mean Daily range of the Temperature during the month 



o 



73.0 

 87.5 

 61.0 

 26.5 

 82.0 

 65.7 

 16.3 



Mean Wet Bulb Thermometer for the month, 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, . , 



Computed Mean Dew-point for the month, .. 



Mean Dry Bulb Thermometer above computed mean Dew-point, 



Mean Elastic force of Yapour for the month, 



o 



65.9 

 7.1 



62.3 



10.7 



Inches. 



0.565 



Troy grains. 

 Mean Weight of Vapour for the month, . . . . . . 6.17 



Additional Weight of Vapour required for complete saturation, . . 2.59 



Mean degree of humidity for the month, complete saturation being unity, 0.70 



Drizzled 2 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches. 



Nil. 



Nil. 



N. W. & N. 



